A suspension cylinder installation structure for a mining dump truck and a mining dump truck

Abstract

The present invention discloses a suspension cylinder mounting structure for a mining dump truck and a mining dump truck, which includes a left longitudinal beam of the vehicle frame, a right longitudinal beam of the vehicle frame, a connecting torsion-resistant pipe, a secondary beam and a mounting seat; the left and right longitudinal beams of the vehicle frame are arranged in parallel at intervals; two connecting torsion-resistant pipes arranged in parallel at intervals are provided in the left and right longitudinal beams of the vehicle frame; the connecting torsion-resistant pipes penetrate through and are welded to the left and right longitudinal beams of the vehicle frame, and both ends of the connecting torsion-resistant pipes penetrate out of the left and right longitudinal beams of the vehicle frame by a preset distance and are welded to a mounting seat; a secondary beam is respectively connected between two mounting seats at the outer webs of the left and right longitudinal beams of the vehicle frame; a mounting hole for mounting a suspension cylinder is provided at the front and rear of the secondary beam, and the four suspension cylinders are connected by two secondary beams on the left and right sides, so that the stress generated by the suspension cylinders on the longitudinal beam of the vehicle frame is transferred to the secondary beam, reducing the tensile stress of the longitudinal beam caused by the suspension cylinders, improving the service life of the longitudinal beam of the vehicle frame and avoiding the fracture of the longitudinal beam.

Description

Technical Field

[0001] The invention relates to a suspension oil cylinder mounting structure for a mining dump truck, belonging to the technical field of mining dump trucks. Background Art

[0002] Mining dump trucks are key equipment in open-pit mining and large-scale earthwork construction. They are professional equipment for transporting ore or earthwork, with the characteristics of heavy load, short transportation distance and high work efficiency. There are two main suspension technologies for Sanqiao mining dump trucks, one is the balanced suspension leaf spring, and the other is the full oil-gas balanced suspension cylinder. The latter has a simple structure and good nonlinear variable stiffness and variable damping characteristics, and its application is more extensive; at present, the mounting seat of the rear axle suspension cylinder of Sanqiao mining dump trucks is welded on the outer web of the frame longitudinal beam, and there are problems such as the intersection of the mounting seat connection weld and the main weld of the longitudinal beam and the tensile stress on the outer web of the frame longitudinal beam, which can easily lead to serious accidents of frame longitudinal beam fracture. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a suspension cylinder installation structure for a mining dump truck, which adds a sub-beam structure and installs the suspension cylinder on the sub-beam, so that the stress generated by the suspension cylinder on the frame longitudinal beam is transferred to the sub-beam, reducing the tensile stress of the longitudinal beam caused by the suspension cylinder, thereby increasing the service life of the frame longitudinal beam and avoiding breakage of the longitudinal beam.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] The invention discloses a suspension cylinder mounting structure for a mining dump truck, comprising a left longitudinal beam of a frame, a right longitudinal beam of a frame, a connecting torsion-resistant tube, a sub-beam and a mounting seat; the left longitudinal beam of the frame and the right longitudinal beam of the frame are arranged in parallel at intervals; two connecting torsion-resistant tubes arranged in parallel at intervals are arranged in the left longitudinal beam of the frame and the right longitudinal beam of the frame; the connecting torsion-resistant tube passes through and is welded to the left longitudinal beam of the frame and the right longitudinal beam of the frame, and both ends of the connecting torsion-resistant tube are welded to one of the mounting seats after passing through the left longitudinal beam of the frame and the right longitudinal beam of the frame by a preset distance; a sub-beam is respectively connected between two mounting seats at the outer webs of the left longitudinal beam of the frame and the right longitudinal beam of the frame; a mounting hole for mounting a suspension cylinder is respectively provided at the front and rear of the sub-beam, and two sub-beams on the left and right sides connect four suspension cylinders, so that the stress generated by the suspension cylinder on the frame longitudinal beam is transferred to the sub-beam.

[0006] A preferred solution is that a reinforcing anti-torsion tube is provided between the left longitudinal beam of the frame and the right longitudinal beam of the frame between two connecting anti-torsion tubes, so as to increase the anti-torsion capacity of the left longitudinal beam of the frame and the right longitudinal beam of the frame.

[0007] Preferred solution: A reinforcing plate is provided at the outer webs of the left and right longitudinal frames of the vehicle frame at both ends of the connecting torsion-resistant pipe. The reinforcing plate penetrates through the connecting torsion-resistant pipe and is welded to the outer webs of the left and right longitudinal frames of the vehicle frame.

[0008] Preferred solution: A circular ring is provided at the reinforcing plate. The circular ring is a collar with a chamfer at the outer end, penetrates through the connecting torsion-resistant pipe and is welded to the reinforcing plate.

[0009] Preferred solution: The mounting seat is a U-shaped mounting plate. The top of the U-shaped mounting plate is set as an inner concave arc surface for welding to the connecting torsion-resistant pipe. Multiple light holes are provided at the bottom of the U-shaped mounting plate and are connected to the auxiliary beam through bolts and washers.

[0010] Preferred solution: The auxiliary beam is a channel-shaped box structure. An installation hole for installing a suspension cylinder is provided on each side of the top of the auxiliary beam, and multiple threaded holes for connecting to the mounting seat are provided on each side of the bottom of the auxiliary beam.

[0011] Preferred solution: A reinforcing patch is welded to each side surface of the auxiliary beam at the installation hole.

[0012] Preferred solution: The bending part of the auxiliary beam adopts a rounded corner transition.

[0013] Preferred solution: The upper hinge point of the suspension cylinder is connected to the auxiliary beam through a pin shaft, and the lower hinge point is connected to the axle.

[0014] The present invention also discloses a mining dump truck equipped with the above-mentioned mining dump truck suspension cylinder mounting structure.

[0015] Advantages of the present invention:

[0016] The designed mining dump truck suspension cylinder mounting structure of the present invention has the following advantages: An auxiliary beam structure is added, and the suspension cylinder is installed on the auxiliary beam, so that the stress generated by the suspension cylinder on the longitudinal frame of the vehicle frame is transferred to the auxiliary beam, reducing the tensile stress on the longitudinal frame by the suspension cylinder, thereby improving the service life of the longitudinal frame of the vehicle frame and avoiding the fracture of the longitudinal frame; Reinforcing plates, circular rings and reinforcing patches are welded at the joints of the longitudinal frame of the vehicle frame and the connecting torsion-resistant pipe, and between the suspension cylinder and the auxiliary beam. The reinforcing plate is an arc-shaped diamond structure, penetrates through the connecting torsion-resistant pipe and is welded to the outer web of the longitudinal frame of the vehicle frame. On the one hand, it ensures a smooth transition of the weld between the reinforcing plate and the outer web of the longitudinal frame of the vehicle frame, avoiding stress concentration. On the other hand, it is used to strengthen the root of the connection between the connecting torsion-resistant pipe and the longitudinal frame of the vehicle frame, improving the root strength and avoiding weld cracking. The circular ring is a collar with a chamfer at the outer end, penetrates through the connecting torsion-resistant pipe and is welded to the reinforcing plate, strengthening the root of the connection between the connecting torsion-resistant pipe and the longitudinal frame of the vehicle frame. The reinforcing plate and the circular ring can make the transition from the connecting torsion-resistant pipe to the outer web of the longitudinal frame of the vehicle frame more gentle, avoiding stiffness mutation. Reinforcing patches are welded on both sides of the circular hole of the auxiliary beam, which also improves the root strength at the joint of the suspension cylinder and the auxiliary beam. Description of the drawings

[0017] The accompanying drawings, as part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation to the present invention. Obviously, the accompanying drawings in the following description are only some embodiments, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0018] In the accompanying drawings:

[0019] Figure 1 is a schematic layout diagram of the installation structure of the suspension cylinder of the dump truck for mining use of the present invention Figure 1 ;

[0020] Figure 2 is a schematic layout diagram of the installation structure of the suspension cylinder of the dump truck for mining use of the present invention Figure 2 ;

[0021] Figure 3 is a partial schematic diagram of the installation structure of the suspension cylinder of the dump truck for mining use of the present invention;

[0022] Figure 4 is a schematic diagram of the secondary beam structure of the present invention;

[0023] Figure 5 is a schematic diagram of the structure of the mounting seat of the present invention;

[0024] Figure 6 is a schematic diagram of the circular ring structure of the present invention.

[0025] Reference numerals in the drawings: 1 - longitudinal beam of the vehicle frame, 2 - connecting torsion-resistant pipe, 3 - reinforcing plate, 4 - circular ring, 5 - mounting seat, 6 - bolt, 7 - washer, 8 - secondary beam, 8-1 - mounting hole, 8-2 - reinforcing patch plate, 8-3 - threaded hole, 9 - reinforcing torsion-resistant pipe, 10 - suspension cylinder.

[0026] It should be noted that these accompanying drawings and the textual descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by reference to specific embodiments. Detailed embodiments

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0029] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] As Figure 1 , Figure 2 shown, a suspension cylinder mounting structure for a mining dump truck includes a frame longitudinal beam 1, a connecting torsion-resistant pipe 2, a reinforcing plate 3, a circular ring 4, a U-shaped mounting plate 5, bolts 6, washers 7, a secondary beam 8, a reinforcing torsion-resistant pipe 9, and a suspension cylinder 10.

[0031] The frame longitudinal beam 1 is composed of a left frame longitudinal beam and a right frame longitudinal beam arranged in parallel at intervals. Both the left frame longitudinal beam and the right frame longitudinal beam are box-shaped structures, which improve the bending resistance of the frame longitudinal beam 1.

[0032] Continue to participate Figure 1 , Figure 2 shown, the connecting torsion-resistant pipe 2 passes through and is welded to the left frame longitudinal beam and the right frame longitudinal beam, improving the torsional resistance of the frame longitudinal beam 1. Both ends of the connecting torsion-resistant pipe 2 are exposed for welding the mounting seat 5.

[0033] As Figure 3 shown, the reinforcing plate 3 is an arc-rhombus structure, passes through the connecting torsion-resistant pipe 2 and is welded to the outer web of the frame longitudinal beam 1. On the one hand, it ensures a smooth transition of the weld between the reinforcing plate 3 and the outer web of the frame longitudinal beam 1, avoiding stress concentration. On the other hand, it is used to strengthen the root of the connecting torsion-resistant pipe 2 and the frame longitudinal beam 1.

[0034] As Figure 6 shown, the circular ring 4 is a collar with a chamfer at the outer end, passes through the connecting torsion-resistant pipe 2 and is welded to the reinforcing plate 3, and is used to strengthen the root of the connecting torsion-resistant pipe 2 and the frame longitudinal beam 1. The reinforcing plate 3 and the circular ring 4 can make the transition of the connecting torsion-resistant pipe 2 to the outer web of the frame longitudinal beam 1 smoother, avoiding stiffness mutation.

[0035] As Figure 5As shown, the mounting base 5 is provided with four light holes and is welded to the connecting torsion-resistant pipe 2. The bolts 6 and washers 7 are both made of high-strength materials and are used to mount the secondary beam 8 on the mounting base 5.

[0036] As Figure 4 shown, the secondary beam 8 is made of high-strength plate and is in a U-shaped box structure. On both sides of the top of the secondary beam 8, there is one mounting hole 8-1 each for mounting the suspension cylinder 10, and on both sides of the bottom of the secondary beam 8, there are multiple threaded holes 8-3 connected to the mounting base 5.

[0037] On both side surfaces of the secondary beam at the mounting hole 8-1, one reinforcing plate 8-2 is welded respectively to improve the root strength at the connection between the suspension cylinder 10 and the secondary beam 8. The reinforcing torsion-resistant pipe 9 penetrates through the left longitudinal beam and the right longitudinal beam of the vehicle frame, increasing the torsion resistance of the vehicle frame longitudinal beam 1. The upper hinge point of the suspension cylinder 10 is connected to the secondary beam 8 through a pin shaft, and the lower hinge point is connected to the axle.

[0038] In summary, the advantages of the suspension cylinder mounting structure of the mining dump truck designed by the present invention are as follows: adding a secondary beam structure, mounting the suspension cylinder on the secondary beam, transferring the stress generated by the suspension cylinder on the vehicle frame longitudinal beam to the secondary beam, reducing the tensile stress of the longitudinal beam caused by the suspension cylinder, so as to improve the service life of the vehicle frame longitudinal beam and avoid the fracture of the longitudinal beam; welding reinforcing plates, rings and reinforcing plates at the connections between the vehicle frame longitudinal beam and the connecting torsion-resistant pipe, and between the suspension cylinder and the secondary beam. The reinforcing plate is in an arc-rhombus structure, penetrates through the connecting torsion-resistant pipe and is welded on the outer web of the vehicle frame longitudinal beam. On the one hand, it ensures a smooth transition of the weld between the reinforcing plate and the outer web of the vehicle frame longitudinal beam, avoiding stress concentration. On the other hand, it is used to strengthen the root of the connection between the connecting torsion-resistant pipe and the vehicle frame longitudinal beam, improving the root strength and avoiding weld cracking. The ring is a sleeve ring with a chamfer at the outer end, penetrates through the connecting torsion-resistant pipe and is welded on the reinforcing plate, strengthening the root of the connection between the connecting torsion-resistant pipe and the vehicle frame longitudinal beam. The reinforcing plate and the ring can make the transition of the connecting torsion-resistant pipe to the outer web of the vehicle frame longitudinal beam more gentle, avoiding stiffness mutation. Reinforcing plates are welded on both sides of the round hole of the secondary beam, which also improves the root strength at the connection between the suspension cylinder and the secondary beam.

[0039] The present invention also discloses a mining dump truck equipped with the above-mentioned suspension cylinder mounting structure of the mining dump truck.

[0040] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0041] In addition, those skilled in the art can understand that although some of the embodiments described herein include certain features contained in other embodiments rather than other features, the combination of features of different embodiments also means that it is within the protection scope of the present invention and forms different embodiments. For example, in the above embodiments, those skilled in the art can use them in a combined manner according to the known technical solutions and the technical problems to be solved by the present application.

[0042] The above description is only a preferred embodiment of the present invention and does not impose any formal limitations on the present invention. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent can make some changes or modifications to equivalent embodiments by using the technical content prompted above without departing from the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the present invention.

Claims

1. An installation structure of a suspension cylinder for a mining dump truck, characterized in that: it includes a left longitudinal beam of the frame, a right longitudinal beam of the frame, a connecting torsion-resistant tube, a secondary beam and a mounting seat; the left longitudinal beam of the frame and the right longitudinal beam of the frame are arranged in parallel at intervals; two connecting torsion-resistant tubes arranged in parallel at intervals are provided in the left longitudinal beam of the frame and the right longitudinal beam of the frame; the connecting torsion-resistant tube penetrates through and is welded to the left longitudinal beam of the frame and the right longitudinal beam of the frame, and both ends of the connecting torsion-resistant tube penetrate out of the left longitudinal beam of the frame and the right longitudinal beam of the frame by a preset distance and are welded to one of the mounting seats; a secondary beam is respectively connected between two mounting seats at the outer webs of the left longitudinal beam of the frame and the right longitudinal beam of the frame; each of the front and rear parts of the secondary beam is provided with a mounting hole for installing a suspension cylinder, and the two secondary beams on the left and right sides connect four suspension cylinders, so that the stress generated by the suspension cylinders on the longitudinal beam of the frame is transferred to the secondary beam; a reinforcing plate is provided at the outer webs of the left longitudinal beam of the frame and the right longitudinal beam of the frame at both ends of the connecting torsion-resistant tube, and the reinforcing plate penetrates through the connecting torsion-resistant tube and is welded to the outer webs of the left longitudinal beam of the frame and the right longitudinal beam of the frame; a circular ring is provided at the reinforcing plate, and the circular ring is a sleeve ring with a chamfer at the outer end, penetrates through the connecting torsion-resistant tube and is welded to the reinforcing plate; the secondary beam is a U-shaped box structure, and each of the two sides of the top of the secondary beam is provided with a mounting hole for installing a suspension cylinder, and each of the two sides of the bottom of the secondary beam is provided with a plurality of threaded holes for connecting with the mounting seat; a reinforcing patch is welded to each of the two side surfaces of the secondary beam at the mounting hole; the bending part of the secondary beam adopts a fillet transition.

2. The installation structure of a suspension cylinder for a mining dump truck according to claim 1, characterized in that: a reinforcing torsion-resistant tube is provided between the left longitudinal beam of the frame and the right longitudinal beam of the frame between the two connecting torsion-resistant tubes, for increasing the torsion resistance of the left longitudinal beam of the frame and the right longitudinal beam of the frame.

3. The installation structure of a suspension cylinder for a mining dump truck according to claim 1, characterized in that: the mounting seat is a U-shaped mounting plate, the top of the U-shaped mounting plate is set as an inner concave arc surface for welding on the connecting torsion-resistant tube, and the bottom of the U-shaped mounting plate is provided with a plurality of light holes and is connected to the secondary beam through bolts and washers.

4. The installation structure of a suspension cylinder for a mining dump truck according to claim 1, characterized in that: the upper hinge point of the suspension cylinder is connected to the secondary beam through a pin shaft, and the lower hinge point is connected to the axle.

5. A mining dump truck, characterized in that: it is installed with the installation structure of a suspension cylinder for a mining dump truck according to any one of claims 1 to 4.

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